Electroluminescent device using nanorods

Abstract

An electroluminescent device may be constructed with a first electrode and a second electrode which are spaced apart from each other and face each other, an inorganic light emitting layer formed between the first and second electrodes, a dielectric layer formed on an inner surface of the second electrode, and a field emission layer which is formed on at least one of an upper or lower surface of the inorganic light emitting layer and which is made from nanorods having a large aspect ratio.

1 . An electroluminescent device comprising:
 a first electrode and a second electrode spaced apart from each other and facing each other;   an inorganic light emitting layer formed between the first and second electrodes;   a dielectric layer formed on an inner surface of the second electrode; and   a field emission layer formed on at least one of an upper and lower surface of the inorganic light emitting layer and made from nanorods.   
     
     
         2 . The electroluminescent device of  claim 1 , comprised of the nanorods comprising nanowires. 
     
     
         3 . The electroluminescent device of  claim 2 , comprised of the nanowires being made from ZnO, TiO 2 , or SiC. 
     
     
         4 . The electroluminescent device of  claim 2 , comprised of the nanowires being aligned perpendicularly to the surface of the inorganic light emitting layer. 
     
     
         5 . The electroluminescent device of  claim 1 , comprised of the nanorods comprising carbon nanotubes (CNTs) aligned perpendicular to the surface of the inorganic light emitting layer. 
     
     
         6 . The electroluminescent device of  claim 1 , comprised of the inorganic light emitting layer being made from at least one of an electroluminescent (EL) phosphor material and a cathode luminescent (CL) phosphor material. 
     
     
         7 . The electroluminescent device of  claim 1 , comprised of the first electrode being made from a transparent conductive material. 
     
     
         8 . The electroluminescent device of  claim 7 , comprised of the transparent conductive material comprising ITO. 
     
     
         9 . The electroluminescent device of  claim 1 , comprised of the second electrode being made from one of a transparent and electrically conductive material or from an electrically conducting metal. 
     
     
         10 . The electroluminescent device of  claim 1 , comprised of the dielectric layer being made from SiO 2 . 
     
     
         11 . The electroluminescent device of  claim 1 , further comprising a dielectric layer formed on an inner surface of the first electrode. 
     
     
         12 . The electroluminescent device of  claim 1 , comprised of an alternating polarity voltage being applied between the first and second electrodes. 
     
     
         13 . An electroluminescent device comprising:
 a first electrode and a second electrode spaced apart from each other and facing each other;   a field emission light emitting layer disposed between the first and second electrodes and made from a mixture of a field emission material comprised of nanorods and an inorganic light emitting material; and   a dielectric layer formed on an inner surface of the second electrode.   
     
     
         14 . The electroluminescent device of  claim 13 , comprised of the nanorods comprising nanowires. 
     
     
         15 . The electroluminescent device of  claim 14 , comprised of the nanowires being made from a material selected from the group of ZnO, TiO and SiC. 
     
     
         16 . The electroluminescent device of  claim 14 , comprised of the nanowires being vertically aligned. 
     
     
         17 . The electroluminescent device of  claim 13 , comprised of the nanorods comprising vertically aligned CNTs. 
     
     
         18 . The electroluminescent device of  claim 13 , comprised of the inorganic light emitting layer comprising at least one of an electroluminescent (EL) phosphor material and a cathode luminescent (CL) phosphor material. 
     
     
         19 . The electroluminescent device of  claim 13 , comprised of the first electrode being made from a transparent and electrically conductive material. 
     
     
         20 . The electroluminescent device of  claim 13 , comprised of the second electrode being made from a transparent and electrically conductive material or an electrically conducting metal. 
     
     
         21 . The electroluminescent device of  claim 13 , further comprising a dielectric layer formed on an inner surface of the first electrode. 
     
     
         22 . The electroluminescent device of  claim 13 , comprised of an alternating polarity voltage being applied between the first and second electrodes. 
     
     
         23 . The electroluminescent device of  claim 13 , wherein the amount of the field emission material with respect to the inorganic light emitting material is 0.01 through 10 wt %.